Search Publications
The classification of cislunar trajectories and its applications in the Earth–Moon system
Xu, Ming; Xu, Shijie; Liang, Yuying
This paper considers the evolvement of cislunar transfers and addresses two distinct types, i.e., direct and low-energy transfers based on Apollo and SMART-1 missions. Both direct and low-energy trajectories are discussed systematically in the context of restricted three-body dynamics in this paper. The differences between them are assessed by con…
Evaluation of standoff distance method to determine the coronal magnetic field using CME-driven shocks
Shanmugaraju, A.; Suresh, K.; Syed Ibrahim, M.
We have analyzed the propagation characteristics of four limb coronal mass ejections (CMEs) with their shocks. These CMEs were observed in 18 frames up to 18 solar radii using LASCO white light images. Gopalswamy and Yashiro (Astrophys. J. 736:L17, 2011) introduced the standoff distance method (SOD) to find the magnetic field in the corona using C…
Multi-satellite observations of energy transport during an intense geomagnetic storm
Dunlop, M. W.; Duan, Aiying; Ma, Yuduan +1 more
Energy transport during a geomagnetic substorm is a very important process for solar wind-magnetosphere energy coupling and the energy cycle in the magnetotail. In this paper, we use magnetotail data from the five THEMIS probes and two Cluster satellites on the dayside to investigate the energy transport of one intense storm during the period from…
Long term average distribution of O +
Wang, Jing; Cao, Jinbin; Liu, Wenlong
Cluster measurements from 2001 to 2011 provide a unique opportunity to study the characteristics of
Ultraviolet spectral variations of symbiotic nova PU Vul during and after second eclipse
Sanad, M. R.
I have analyzed spectral data of the symbiotic nova PU Vul observed with the International Ultraviolet Explorer (IUE) during the period 1993–1996. The study concentrated on the two sources of nebular emitting regions, the first is a nebula around the white dwarf partially eclipsed by a cool giant star and the second is a very extended nebular regi…
KOSMA 12CO(2–1) and (3–2) observations toward Infrared Dark Clouds
Li, Dalei; Tang, Xindi; Zhou, Jianjun +7 more
Infrared Dark Clouds (IRDCs) are a valuable sample to study the initial conditions and the very early stages of the evolution of massive stars. Using the KOSMA telescope, we performed simultaneous single point 12CO(2–1) and (3–2) observations toward 117 IRDCs with a detection rate of 74 % for 12CO(2–1) and 58 % for 12
Dawn-dusk scale of dipolarization front in the Earth's magnetotail: multi-cases study
André, M.; Vaivads, A.; Deng, X. H. +10 more
We analyze three dipolarization front (DF) events to investigate their dawn-dusk scales in the Earth's magnetotail using the Cluster measurements in year 2007, when the spacecraft separation is about 1.8 Re (Re is the Earth's radius) and is appropriate for investigating the DF scale. Based on the Minimum Variance Analysis (MVA) and the general sha…
Power law inflation with a non-minimally coupled scalar field in light of Planck 2015 data: the exact versus slow roll results
Herrera, Ramón; del Campo, Sergio; Gonzalez, Carlos
We study the power law inflation in the context of non-minimally coupled to the scalar curvature. We analyze the inflationary solutions under an exact analysis and also in the slow roll approximations. In both solutions, we consider the recent data from Planck 2015 data to constraint the parameters in our model. In this framework, we find that in …
Anomalous Earth flybys of spacecraft
Wilhelm, Klaus; Dwivedi, Bhola N.
A small deviation from the
X-ray spectral parameters for a sample of 95 active galactic nuclei
Vasylenko, A. A.; Fedorova, E. V.; Zhdanov, V. I.
We present a broadband X-ray analysis of a new homogeneous sample of 95 active galactic nuclei (AGN) from the 22-month Swift/BAT all-sky survey. For this sample we treated jointly the X-ray spectra observed by XMM-Newton and INTEGRAL missions for the total spectral range of 0.5–250 keV. Photon index